Applicator tool for electrical pass-throughs



Aug. 9, 1949. J. DE SWART APPLICATOR TOOL FOR ELECTRICAL PASS THROUGHS'Filed March' 23 1946 I N V EN TbR. L/Zm d9 Smart W514 Patented Aug. 9,1949 UNITED m-TE APPLICATGB TOOL FOR ELECTRICAL PASS-THRQUG-HS Jan deSwart, Los .Angeles, Calif assignor to' .Shellmar Products Corporation,Mount Vernon,

"Ohio, a corporation of Delaware Application March'23, 1946,'-Serial-No. 656,591 1 Claim- (Cl.2;18-19-) 'Myinvention is concerned witha hand tool or I connecting device 1 installed :applicator forinstaliing an electrical connecting device or pass-through. I

In :the production and installation of certain types of electricalequipment it is frequently necessary to connect a' wire which is locatedon an accessible side of apartition with another wire which is locatedon the opposite or inaccessible .side of the partition. This connectionmay be :made by drilling, or otherwise providing, a hole in thepartition, drawing theinaccessiblewire through the hole and securing itby soldering, or the like, to a connecting device or pass-through,installing the pass-through in the hole and then securing the wire onthe accessible side of the partition to the pass-through.

It is an object of my invention to provide an applicator or hand tool,which is particularly designed for installing inanaperture inapartition, an electrical connecting device or pass-through of the typewhich comprises an outer securin sleeve and a telescoping insulatorcovered core member wherein the sleeve is provided atoneend' with anoutwardly directed abutment portion and at the other end with inwardlydirected: expandable portions which initially engage in a recess in theinsulator-portion of the core member gwhereby when the connecting deviceis positioned vinthe aperture with the abutment portion in engagementwith one side of the partition and the core member ,is pulledtoward'said abutment the expandable portions of the sleeve will buckleoutwardly and form a securing shoulder in engagement with the other sideof the partition.

.It is an object of my invention to provide a hand tool having an innermember provided with resilient jaws, an outer telescoping memberprovided with resilient abutment members and an operating mechanism tomove the jaws into engagement with the abutment member to cause the jawsto grip an element placed between the same and move it in the directionof the abutment members.

These and other objects will be apparent from a description of my devicewhich is illustrated by I way of example in the accompanying drawings,

wherein: a

Fig. 1 is an elevation of my applicator tool with a portion of theoperating handle broken away;

Fig. 2 is an end view of the device shown in Fig. 1;

Fig. 3 is a section on the line 3-3 of Fig. 1;

Fig. 4 is a section on the line 44 of Fig. 2;

Fig. 5 is an elevation showing the connecting device or pass-throughwhich my applicator is particularly designed to install;

Fig. 6 is a view partly in section showing the connecting device inposition in an aperture with my applicator in position to install thesame; and

Fig. 7 is a View similar to Fig. 6 showing the surfaces 32 of thefingers 3e are brought into' 7 engaging relation with the outer surfaces21 of.

' 2 V in the aperture but not yet released from the applicator tool.

-.' applicator tool, .as illustrated in the draw- ;irrgatis.particularly designed to install in an aperitnred wall or. partition anelectrical connecting device orpass-through,of the type illustrated inFig. 5, which comprises an outer securing sleeve .126 and an innerconnecting element H. The innerxconnecting elementill includes arod-like core member 12 around which a plastic insulator member I3 hasbeen molded. The insulator member l3 ii-s'zprovided with acircumferential groove 1 4 "which receives the inturned slotted-endtli'of the securing sleeve to. The securing sleeve |9 is provided at theother end with a circum- :ferentia'l' outwardly extending flange orabutment shoulder l6. r c

My:applicator tool comprises an inner rod-like V tension applying member'20 and an outer tubelike section or body member 21.. The inner mem-:ber 20 is provided at one .end with resilient jaw- :l'il'ze portions ormembers 22 separated by slots 23 which extend radially inwardly to :acentral re- ;cess 2 L The's10ts23 extend axially of the mem- =ber 20 topermit movement of the jaw members -;22-towards each other to engage ingripping realation .an end 25 of the rod-like :core I2 of the connectormember 1-1 when it is positioned in the recess 23. serrations 26 may beprovided at the outer ends of the jaw members 22 to increase theirgripping action. The outer surfaces 21 of 7 the jaw members 22 arebeveled in an inward axial direction. The inner member 20 extends intothe outer tubular member 2| and is provided at its inner end with a pin28 which extends outwardly through parallel guide slots 29 in the outermember 2|.

The outer member 2| is provided at one end with resilient abutmentportions or fingers 39 separated by spaced slots 3|. The inner surfacesof the fingers 30 are shaped as shown in Fig. 4 to provide an inwardlytapered surface 32 for engagement with the tapered outer surfaces 21 ofthe jaw members 22 when the inner member 20 is moved into the outer tube2| to bring these surfaces into engagement.

A handle member 33 is provided with downwardly directed legs 34 whichare pivoted at 35 to the tube 2| adjacent its slotted end. The links 36are connected at one end to the handle member 33by pivot 3'! and at theother end to the pin 28 extending from the inner member 20. By movingthe gripping portion 38 of the handle 33 toward the tube 2| the pin 28.guided by slots 29, is moved inwardly of the tube 2|. and the inner thejaw members 22.

I have illustrated the use of my applicator tool in Figs. 6 and. 7.After the end of the wire 39 aperture 4| of the partition 40 with theflange 16 of securing sleeve Ill in engagement with the accessiblesurface of the partition 40 and end 25 of the core I2 extendingoutwardly of flange I6. My applicator tool is then positioned with theend 25 of core l2 extending into the recess 23 in the tension applyingrod 20 and the ends of the abutment fingers 30 in engagement with theflange 16. The gripping portion 38 of the applicator handle 33 is thenmoved toward the tube 2| and the surfaces 32 engage the surfaces 21 toforce the jaws 22 into gripping relation with the end 25 of the core 12.Further movement of the gripping portion 38 toward the tube 2| moves theinner element ll of the connecting 'device towards the flange l6 andcauses the end portions 15 of the securing sleeve In to expand or buckleoutwardly and form a shoulder 43 in engagement with the inaccessiblesurface of the partition 49. The split'ends 30 of the tubular member 2|will expand under pressure from the jaws 22 and permit the jaws 22 tomove into the tube 2| after they engage in gripping rela-'- tion withthe rod 25 a suflicient distance to bring about the clinching .orexpanding action of the end l of the member ID as illustrated in Fig. 7.The tool may then be removed by moving the gripping portion 38 of thehandle 33 away from the body member 2| to release the gripper jaws 22from gripping relation with the end 25 of the core l2. The installationof the connecting device is then completed by securing to the core end25 the end of the wire on the accessible side of the partition 40.

While I have described my applicator tool as embodying specific detailsof construction and as used in the installation of a specific device itwill be understood that other details and other uses may be resorted towithin the spirit of my invention.

I claim:

An applicator, for installing in an aperture in a panel, a two-partelectrical pass-through device of the type having an outer flangedsleeve adapted to be positioned in the aperture with the flange inengagement with one side of the panel and an inner interengaginginsulated connecting rod which is movable within the sleeve to cause oneend of the sleeve to expand into engagement with the other side of thepanel to secure the device in the panel, comprising a hollow tube havinga slotted end adapted to be engaged with the flange on the securingsleeve of said passthrough, a tension applying rod telescoped in saidtube, said tension applying rod being axially split at the end toprovide gripper jaws normally extending exteriorly of said tube at theslotted end direction in said securing sleeve.

JAN DE SWART.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,170,323 Gorshkoff Aug. 22, 19392,216,767 DaVitow Oct. 8, 1940 2,384,690 Mullgardt Sept. 11, 19452,399,442 Luce Apr. 30, 1946 2,406,949 Huck Sept. 3, 1946 FOREIGNPATENTS 7 Number Country Date 514,462 Great Britain Nov. 8, 1939

